Impurity Reference Standard - Products

Antipyrine

CAT No: Cl-ANPN-01 CAS No: 60-80-0 Mol Wt: 188.2 Mol F: C11H12N2O Inv Status: Custom Synthesis

Chemical Name: 1,2-Dihydro-1,5-dimethyl-2-phenyl-3H-pyrazol-3-one

Antipyrine USP Related Compound A

CAT No: Cl-ANPN-02 CAS No: 89-25-8 Mol Wt: 174.2 Mol F: C10H10N2O Inv Status: In Stock

Chemical Name: 3-Methyl-1-phenyl-1H-pyrazol-5(4H)-one

4-Formyl Methylamino Antipyrine

CAT No: Cl-ANPN-03 CAS No: 1672-59-9 Mol Wt: 245.3 Mol F: C13H15N3O2 Inv Status: Custom Synthesis

Chemical Name: N-(1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)-N-methylformamide

4-Hydroxyantipyrine Sulfate

CAT No: Cl-ANPN-04 CAS No: 81416-56-0 Mol Wt: 284.3 Mol F: C11H12N2O5S Inv Status: Custom Synthesis

Chemical Name: 1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl hydrogen sulfate

Metamizole Antipyrine-4-Peroxide

CAT No: Cl-ANPN-05 CAS No: 69124-27-2 Mol Wt: 220.2 Mol F: C11H12N2O3 Inv Status: Custom Synthesis

Chemical Name: 4-Hydroperoxy-1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one

Nitrosoantipyrine

CAT No: Cl-ANPN-06 CAS No: 885-11-0 Mol Wt: 217.2 Mol F: C11H11N3O2 Inv Status: Custom Synthesis

Chemical Name: 1,5-Dimethyl-4-nitroso-2-phenyl-1,2-dihydro-3H-pyrazol-3-one

Diantipyrylmethane

CAT No: Cl-ANPN-07 CAS No: 1251-85-0 Mol Wt: 388.5 Mol F: C23H24N4O2 Inv Status: Custom Synthesis

Chemical Name: 4,4'-methylenebis(1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one)

Aminopyrine (N,N-Dimethyl-13C2)

CAT No: Cl-ANPN-08 CAS No: 60433-90-1 Mol Wt: 233.3 Mol F: C1113C2H17N3O Inv Status: Custom Synthesis

Chemical Name: 4-(Di(methyl-13C)amino)-1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one

Antipyrine D3

CAT No: Cl-ANPN-09 CAS No: 65566-62-3 Mol Wt: 191.2 Mol F: C11H9D3N2O Inv Status: Custom Synthesis

Chemical Name: 5-Methyl-1-(methyl-d3)-2-phenyl-1,2-dihydro-3H-pyrazol-3-one